孩子们在博物馆里对那具巨大的蜥脚类恐龙骨架感到惊叹。

The children were amazed by the huge ___sauropod skeleton in the museum.

科学家们在挖掘现场发现了巨大的蜥脚类恐龙骨骼化石。

Scientists discovered massive ___sauropod bone fossils at the excavation site.